Results 251 to 260 of about 107,395 (302)
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Free-Piston Stirling Cryocoolers
1985A cryocooler is a device used to produce refrigeration at very low temperatures in the cryogenic range, 0 to 120 K.
Graham Walker, J. R. Senft
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Piston-retardation insert in a free-piston compressor
AIAA Journal, 1970The complete solution, expressed in terms of Eqs. (7, 10> and 11), gives the temperature profile along the fin in terms of the radiation-conduction parameter e, convection parameter (Biot modulus) X, environment temperature Oe, and fin geometry v.
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Dynamic Analysis of the Single Piston Hydraulic Free Piston Engine
Applied Mechanics and Materials, 2011The connection of the engine body and the base was simplified as a spring and a damper to analyze the body vibration of the single piston hydraulic free piston engine. It was demonstrated that the increasing of the connection spring rate can reduce the amplitude of the body vibration.
Hao Ling Ren, Hai Bo Xie, Hua Yong Yang
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Design approach for single piston hydraulic free piston diesel engines
Frontiers of Mechanical Engineering in China, 2009The operating characteristics of a single piston hydraulic free piston diesel engine differ significantly from conventional diesel engines and this provides a theoretical basis for controlling and optimizing the design of the engine. The design of the proposed engine intended as a power supply for a hydraulic propulsion vehicle is presented.
Wei Wu +3 more
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Constraint enforcement of piston motion in a free-piston engine
2014 American Control Conference, 2014Precise control of piston turnaround location is essential for reliable free-piston engine (FPE) operation. In this paper we derive a discrete-time, control-oriented, implicit model that describes FPE clearance height behavior by applying an energy balance to the Otto cycle.
Kevin Zaseck +2 more
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Simulation of an Opposed-Piston Four-Stroke Free-Piston Generator
Applied Mechanics and Materials, 2013In order to achieve efficient conversion of the chemical energy of fuel into the electrical energy, a novel opposed-piston four-stroke free-piston generator is developed in this paper by equipping one free-piston engine with two linear generators. Mathematical models of the opposed-piston four-stroke free-piston generator are created based on the ...
Zhao Ping Xu, Si Qin Chang
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On the Piston Motion of a Free-Piston Shock Tube
Aeronautical Quarterly, 1965SummaryThe motion of a solid piston between the driver and test gases in a closed shock tube is studied. In particular, the piston stopping distance, i.e. the total length required to bring the piston to a stop, is calculated for various experimental conditions. Before the stop, the moving piston compresses the test gas, at first with its induced shock
Tzy C. Peng, Theo. F. Elbert
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FORD FREE-PISTON ENGINE DEVELOPMENT
SAE Technical Paper Series, 1959<div class="section abstract"><div class="htmlview paragraph">THE Free-Piston Engine Program described in this paper was concerned with determining thermodynamic relationships of small, high-speed engines. The purpose was to establish proper engine geometry and mechanical design which could then be applied to developing larger automotive ...
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Large Free-Piston Stirling Engines
1985The word ‘large’ applied to Stirling engines means different things to different people. An engine having a 3 kW output would be large to those working on artificial hearts or cryocoolers for electronic applications. It would be small, negligibly so, to those interested in locomotive propulsion.
Graham Walker, J. R. Senft
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Friction characteristics of piston rings in a free-piston engine generator
International Journal of Engine Research, 2016Free-piston engine generator is a new alternative to traditional reciprocating engine, which moves without mechanical restriction of crankshaft system. This article investigated numerically the friction characteristics of piston rings in a free-piston diesel engine generator by adopting coupled models of dynamic and friction.
Chenheng Yuan +3 more
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